for(Int_t i = 0 ; i < knRatio ; i++) {
TH1D *ratio = (TH1D*)list[specie]->At(19 + 2*i + type);
TH1D *histN = (TH1D*)list[specie]->At(3 + 2*kN[i] + type);
for(Int_t i = 0 ; i < knRatio ; i++) {
TH1D *ratio = (TH1D*)list[specie]->At(19 + 2*i + type);
TH1D *histN = (TH1D*)list[specie]->At(3 + 2*kN[i] + type);